Irreversible reaction

Potassium with the water of the make-up to KOH and hydrogen

2K+2H2O2KOH+H2

Direction
Irreversible
Processes
1
Stated as
Rate law
Heat of reaction
ΔH = -277,600 kJ/kmol (one process)
Element balance
Checked: balances
As the processes state itStoichiometry, conversions, heats of reaction and catalyst windows are taken from each process's files with their provenance. The build checks only that each process's equation balances in every element, from the process's own component formulas; it does not check the numbers. A process's design maturity applies to them.

Species

SpeciesNameCASRoleCoefficient
KPotassium7440-09-7reactant-2
H2OWater7732-18-5reactant-2
KOHPotassium hydroxide1310-58-3product2
H2Hydrogen1333-74-0product1

In the processes

  • Potassium tert-butoxide from potassium and dry tert-butanol, semi-batch with alcohol strip and vacuum drying (1000 t/a)Concept · not reviewed

    WAT · Potassium with the water of the make-up to KOH and hydrogenK + H2O → KOH + 1/2 H2

    Scale
    Written at 0.5 times the scale
    Stated as
    Rate law
    Phase
    liquid
    Element balance
    Balances in every element
    Heat of reaction
    ΔH = -138,800 kJ/kmol at 298.15 K, as written (assumed: ASSUMED (D-005): K + H2O(l) -> KOH(s) + 1/2 H2(g) from the formation enthalpies packaged in chemicals 1.5.2 (KOH -424.6 kJ/mol, CRC; water -285.8 kJ/mol, CRC), the KOH taken as dissolved without a heat of solution)
    Rate law
    basis: volume; driving: concentration; form: power_law; k: {"A":100340000,"Ea":40000}; orders: {"H2O":1,"K":1}; temperature range: 336.65 – 365 (assumed: ASSUMED fast (D-005): potassium reacts with water far faster than with tert-butanol, so the make-up's water is taken up first; its extent is the water fed, its rate does not matter to the balance)

Sources

What the processes cite for this reaction, each source once: for the reaction itself, its conversion, its heat of reaction or its catalyst. As the processes write them; DOIs, US patent numbers and web addresses are linked.

  1. Wikipedia, Potassium: reacts vigorously with water, the heat released enough to ignite the hydrogen formed

    For the reaction · cited by Potassium tert-butoxide from potassium and dry tert-butanol, semi-batch with alcohol strip and vacuum drying (1000 t/a)

  2. ASSUMED (D-005): K + H2O(l) -> KOH(s) + 1/2 H2(g) from the formation enthalpies packaged in chemicals 1.5.2 (KOH -424.6 kJ/mol, CRC; water -285.8 kJ/mol, CRC), the KOH taken as dissolved without a heat of solution

    For the heat of reaction · cited by Potassium tert-butoxide from potassium and dry tert-butanol, semi-batch with alcohol strip and vacuum drying (1000 t/a)